riscv: Add kprobes KUnit test

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Add KUnit test for riscv kprobes, mostly for simulated instructions. The
test install kprobes into multiple sample functions, and check that these
functions still return the expected magic value.

This test can detect some kprobe bugs reported in the past (in Link:).

Link: https://lore.kernel.org/linux-riscv/20241119111056.2554419-1-namcao@linutronix.de/
Link: https://lore.kernel.org/stable/c7e463c0-8cad-4f4e-addd-195c06b7b6de@iscas.ac.cn/
Link: https://lore.kernel.org/linux-riscv/20230829182500.61875-1-namcaov@gmail.com/
Signed-off-by: Nam Cao <namcao@linutronix.de>
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20250513151631.3520793-1-namcao@linutronix.de
Signed-off-by: Paul Walmsley <pjw@kernel.org>

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Nam Cao 2025-05-13 17:16:31 +02:00 • committed by Paul Walmsley

parent f811f58597

commit f2fab61282

6 changed files with 323 additions and 0 deletions

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12

arch/riscv/kernel/tests/Kconfig.debug

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arch/riscv/kernel/tests/Makefile

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arch/riscv/kernel/tests/kprobes/Makefile

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arch/riscv/kernel/tests/kprobes/test-kprobes-asm.S

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arch/riscv/kernel/tests/kprobes/test-kprobes.c

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arch/riscv/kernel/tests/kprobes/test-kprobes.h

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